Research Article

Prognostic and Predictive Values of Subcellular Localisation of RET in Renal Clear-Cell Carcinoma

Table 2

Multivariable Cox regression analyses.

Multivariable Cox regressionAssociation with PFSAssociation with OS
valueHR95% CI valueHR95% CI

(A) RET cytoplasmic continuous
 Fuhrman grade0.0031.4081.120–1.7700.0391.2921.014–1.646
 ECOG PS<0.0011.7661.419–2.199<0.0011.9211.521–2.428
 T stage0.0111.2751.057–1.5380.0261.2421.026–1.503
 Metastasis<0.0012.7751.791–4.298<0.0013.1431.998–4.944
 Targeted treatment0.0010.5180.349–0.769<0.0010.4070.270–0.613
 RET continuous<0.0011.8601.459–2.372<0.0011.6661.306–2.125

(B) RET nuclear continuous
 Fuhrman grade0.0031.4081.123–1.7650.0391.2871.012–1.636
 ECOG PS<0.0011.8421.470–2.308<0.0011.9991.573–2.541
 T stage0.0241.2441.029–1.5030.0431.2201.006–1.480
 Metastasis<0.0012.6711.697–4.203<0.0013.0971.930–4.970
 Targeted treatment0.0020.5260.351–0.790<0.0010.4190.275–0.639
 RET nuclear continuous0.0041.3791.109–1.7160.0471.2601.003–1.584

(C) RET cytoplasmic dichotomized
 RET cytoplasmic (high versus low)0.0011.6831.235–2.2930.0031.6351.185–2.255

(D) RET nuclear dichotomised
 RET nuclear (high versus low)0.0201.4281.058–1.9270.3071.1800.859–1.623

(E) Multivariable Cox regression (combined RET cytoplasmic and nuclear expression)
 Low RET nuclear and cytoplasmicreference
 High RET nuclear only0.0281.7131.059–2.7720.0831.5680.943–2.608
 High RET cytoplasmic only0.2201.3660.830–2.2480.1361.5070.879–2.582
 High RET nuclear and cytoplasmic<0.0012.4661.639–3.711<0.0012.2941.499–3.510

Covariates are not showed for the omitted space; comparisons of dichotomized variable.
HR, hazard ratio; CI, confidence interval; ECOG PS, Eastern Cooperative Oncology Group performance status.